You can also try contacting the COM Add-in vendor and requesting a 64-bit version.

You can continue to run 32-bit COM add-ins in 32-bit Office on 64-bit Windows. You have 32-bit COM Add-ins with no 64-bit alternative. IT professionals, and developers in particular, should also review the following situations where the 32-bit version of Office is still the best choice for you or your organization. Tip: If you have 64-bit operating system with an 圆4-based processor, you can choose to install 32-bit or 64-bit Office. Check your Windows version.Ħ4-bit operating system with ARM-based processorģ2-bit operating system with an x86 (32-bit) processor The following computer systems can only install 32-bit Office. For more information, see Using the Large Number data type. 64-bit VBA provides the LongLong data type which fully supports large numbers. You’re working with the Large Number data type in Access, and while this data type is supported by 32-bit Access, you may see unexpected results when executing code or expressions that use native 32-bit VBA libraries. In-house Office solution developers should have access to the 64-bit Office 2016 for testing and updating these solutions. Using the 64-bit version of Office lets you deliver a 64-bit version of those solutions as well as a 32-bit version. You’re developing in-house Office solutions like add-ins or document-level customization.

You’re working with files over 2 GB in Project, especially if the project has many sub-projects. The 64-bit version of Office may be better suited to handle these complex slide decks. You’re working with extremely large pictures, videos, or animations in PowerPoint. See Excel specifications and limits, Data Model specification and limits, and Memory usage in the 32-bit edition of Excel. The 64-bit version of Office may perform better in these cases. You’re working with large data sets, like enterprise-scale Excel workbooks with complex calculations, many pivot tables, data connections to external databases, Power Pivot, 3D Map, Power View, or Get & Transform. Therefore, if your scenarios include large files and/or working with large data sets and your computer is running 64-bit version of Windows, 64-bit is the right choice when: Also, 64-bit applications can access more memory than 32-bit applications (up to 18.4 million Petabytes). Reasons to choose the 64-bit versionĬomputers running 64-bit versions of Windows generally have more resources such as processing power and memory, than their 32-bit predecessors. If you're still not sure which version, 32-bit or 64-bit is a better choice for you, see the section below.

See “Office (64-bit or 32-bit) couldn’t be installed” error. The same is true if you installed the 32-bit version, but want to install the 64-bit version. Important: If you install the 64-bit version, but want the 32-bit version instead, you must first uninstall the 64-bit version before installing the 32-bit version.

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